add vim-sleuth

enable treesitter indentation

roles/neovim/files/lua/plugins.lua

@@ -51,4 +51,7 @@ return require('packer').startup(function()
 
 	-- Commenting
 	use 'terrortylor/nvim-comment'
+
+	-- Automatic settings depending on file type
+	use 'tpope/vim-sleuth'
 end)